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Peer-reviewedCC BY 4.0Journal of High Energy Physics

Migdal ionization as a probe of light dark matter from nuclear transition

  • Yuanchao Lou1
  • Liangliang Su2
  • Lei Wu1,3
  1. 1Nanjing Normal University
  2. 2Karlsruhe Institute of Technology
  3. 3Nanjing Key Laboratory of Particle Physics and Astrophysics
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Abstract

A bstract : Nuclear reactors serve as a key artificial source of light dark matter. Direct detection of reactor-produced dark matter faces substantial obstacles, since quenching effects suppress conventional elastic scattering signals below detector thresholds. We present a new search strategy utilizing the Migdal effect in germanium detectors to probe light dark matter produced via nuclear de-excitation from reactors. Using ON-OFF residual spectra from the TEXONO experiment, we set a new stringent limit on the dark matter and nucleus interaction over the mass range 0 . 01 MeV ≲ m χ ≲ 2 . 6 MeV, which provides a complementary bound to existing cosmological and astrophysical limits.

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Cite

BibTeXRIS
BibTeX
@article{lou2026migdal,
  title = {{Migdal ionization as a probe of light dark matter from nuclear transition}},
  author = {Yuanchao Lou and Liangliang Su and Lei Wu},
  journal = {Journal of High Energy Physics},
  year = {2026},
  month = nov,
  doi = {10.1007/jhep11(2026)014},
  url = {https://link.springer.com/article/10.1007/JHEP11(2026)014},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Migdal ionization as a probe of light dark matter from nuclear transition
AU  - Yuanchao Lou
AU  - Liangliang Su
AU  - Lei Wu
PY  - 2026
DA  - 2026/11/02
JO  - Journal of High Energy Physics
DO  - 10.1007/jhep11(2026)014
UR  - https://link.springer.com/article/10.1007/JHEP11(2026)014
AB  - A bstract : Nuclear reactors serve as a key artificial source of light dark matter. Direct detection of reactor-produced dark matter faces substantial obstacles, since quenching effects suppress conventional elastic scattering signals below detector thresholds. We present a new search strategy utilizing the Migdal effect in germanium detectors to probe light dark matter produced via nuclear de-excitation from reactors. Using ON-OFF residual spectra from the TEXONO experiment, we set a new stringent limit on the dark matter and nucleus interaction over the mass range 0 . 01 MeV ≲ m χ ≲ 2 . 6 MeV, which provides a complementary bound to existing cosmological and astrophysical limits.
SN  - 1029-8479
ER  -